package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.apache.ibatis.logging.stdout.StdOutImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Objects;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        // 密码进行md5加密，不可逆操作
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //密码错误
        if (!password.equals(employee.getPassword())) {

            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        //账号被锁定
        if (Objects.equals(employee.getStatus(), StatusConstant.DISABLE)) {
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employee.setStatus(StatusConstant.ENABLE);
        employeeMapper.insertEmployee(employee);
    }

    @Override
    public PageResult getPage(String name) {
        Page<Employee> page = employeeMapper.getPage(name);
        long total = page.getTotal();
        List<Employee> result = page.getResult();
        return new PageResult(total, result);
    }

    @Override
    public void postStatus(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);
    }

    @Override
    public void put(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }

    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        Employee employee = Employee.builder()
                .id(passwordEditDTO.getEmpId())
                .updateTime(LocalDateTime.now())
                .password(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()))
                .build();

        employeeMapper.update(employee);
    }

}
